CN220171099U - Miniature motor performance test fixture mechanism - Google Patents

Abstract

The utility model discloses a miniature motor performance test clamp mechanism, which comprises: the product jig module (2) is used for placing a product to be tested; the double-needle test module (4) comprises three groups of test probes connected with the tester through test wires (48), wherein each group of test probes comprises a first probe (41) and a second probe (42); the test tool module (3) comprises three test channels, and is used for clamping three wire cores of a lead (11) of the product to the three test channels respectively and plugging three groups of test probes into the three test channels, wherein a first probe (41) and a second probe (42) of the same group are simultaneously in electrical contact with the same test channel; the utility model can realize small internal resistance of the test channel, high phase-phase insulation and high contact reliability through double-needle test, achieves a stable test environment, improves the accuracy and reliability of motor test parameters, reduces false detection and false judgment, and eliminates the quality risk of defective product outflow.

Description

Miniature motor performance test fixture mechanism

Technical Field

The utility model relates to the field of motor testing, in particular to a miniature motor performance testing clamp mechanism.

Background

The current miniature direct current motor test comprises resistance, turn-to-turn and withstand voltage tests, the test requirements are very small on the contact resistance of the tested product, the internal resistance of a test channel is very low, and the requirements for quick product taking and placing are met, so that an optimal test channel and a low internal resistance high-insulation precise connecting mechanism are required to be designed in a test mode, a fixture positioning and clamping mechanism, test data are stable and reliable, and quick product taking and placing is realized, so that high-precision and high-efficiency test is achieved.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a miniature motor performance test clamp mechanism aiming at the requirements of the prior art.

The technical scheme adopted for solving the technical problems is as follows: construct a miniature motor capability test fixture mechanism, include:

the product jig module is used for placing a product to be tested;

the double-needle test module comprises three groups of test probes connected with the tester through test wires, wherein each group of test probes comprises a first probe and a second probe;

the test fixture module comprises three test channels, wherein three wire cores of a lead of the product are respectively clamped to the three test channels, and three groups of test probes are inserted into the three test channels, and the first probes and the second probes of the same group are simultaneously in electrical contact with the same test channel.

Further, in the fixture mechanism for testing the performance of the miniature motor, the testing fixture module comprises a base, clamps and conductive blocks, wherein three conductive plates are arranged on the base at intervals to serve as three testing channels, the three clamps are arranged on the base through rotating shafts perpendicular to the clamps and are located right above the three conductive plates, the conductive blocks used for being in contact with the conductive plates are arranged at the bottoms of the head ends of the clamps, a first pinhole used for inserting a first probe and a second pinhole used for inserting a second probe are formed in the tops of the head ends of the clamps, the first probe is abutted to the conductive plates after being inserted through the first pinhole, and the second probe is inserted into the second pinhole and is electrically connected with the conductive blocks.

Further, in the miniature motor performance test clamp mechanism, the first pin hole is a through hole, and the second pin hole is a blind hole;

and each second pinhole is provided with a conductive bolt, the clamp and the conductive block are fixed by the bolts, the nuts of the bolts are provided with jacks, and the second probe is inserted into the second pinhole and then is just clamped into the jack of the bolt.

Further, in the fixture mechanism for testing performance of the micro motor, the testing fixture module further comprises a spring, wherein the spring is arranged between the bottom of the tail end of the clamp and the base, and the spring is used for lifting the tail end of the clamp so that the head end of the clamp is pressed downwards towards the conducting plate.

Further, in the jig mechanism for testing performance of a micro motor according to the present utility model, the conductive plates and the clips extend along a first horizontal direction, the three conductive plates and the three clips are arranged side by side along a second horizontal direction, the rotating shaft extends along the second horizontal direction, the second horizontal direction is perpendicular to the first horizontal direction, and the first pinhole and the second pinhole on each clip are arranged along a direction of leading ends and trailing ends of the clips.

Further, in the jig mechanism for testing performance of the micro motor, the double-needle testing module comprises a fixing frame, a first fixing block, a second fixing block and a locking plate, wherein the fixing frame, the first fixing block, the second fixing block and the locking plate are vertically arranged and are sequentially stacked and fixed together through bolts;

the back of first fixed block is faced the mount, openly offers three bar grooves that are used for installing first probe that extend along vertical direction side by side, the back of second fixed block is faced first fixed block, openly offered three bar grooves that are used for installing the second probe that extend along vertical direction side by side, the front at the second fixed block is installed to the locking board.

Further, in the jig mechanism for testing performance of a micro motor, the product jig module comprises a conductive base, a positioning needle and a wire buckle, wherein the positioning needle and the wire buckle are arranged at the top of the conductive base, the product is inserted into the positioning needle, and the wire buckle is positioned beside the positioning needle and used for fixing the lead.

Further, in the fixture mechanism for testing performance of a micro motor according to the present utility model, the dual-needle testing module further includes a third probe mounted on the fixing frame for performing insulation detection, and the third probe is configured to move downward to contact with the conductive base when the fixing frame is pressed down into the testing fixture module with the first probe and the second probe.

Further, in the jig mechanism for testing performance of a micro motor according to the present utility model, the product jig module further includes a lower protection cover and an upper protection cover disposed on the lower protection cover, the lower protection cover is in a disc shape, the upper protection cover is in a ring shape with a part of arc cut off, the conductive base is disposed on the upper protection cover and fixed with the lower protection cover by a pin, and a spring is disposed between the conductive base and the lower protection cover.

Further, in the micro motor performance test fixture mechanism, the micro motor performance test fixture mechanism further comprises a rotary table positioned below the double-needle test module, wherein a circle of fixture placement grooves for placing the product fixture module and a circle of fixture placement grooves for placing the test fixture module are distributed on the rotary table at intervals along the circumferential edge of the rotary table.

The miniature motor performance test fixture mechanism has the following beneficial effects: the utility model uses the testing tool module to clamp the three wire cores of the lead wire of the product to the three testing channels respectively, the clamping mode can ensure the contact reliability, but the utility model inserts three groups of testing probes to the three testing channels, wherein two probes of the same group are simultaneously in electrical contact with the same testing channel, the internal resistance of the testing channel is small, the phase-phase insulation is high, the contact reliability is high, a stable testing environment is achieved, the accuracy and the reliability of the parameters of the three tests (internal resistance, turn-to-turn and withstand voltage) of the motor are improved, and the quality risks of false detection, false judgment and defective product outflow are reduced.

Drawings

For a clearer description of an embodiment of the utility model or of a technical solution in the prior art, the drawings that are needed in the description of the embodiment or of the prior art will be briefly described, it being obvious that the drawings in the description below are only embodiments of the utility model, and that other drawings can be obtained, without inventive effort, by a person skilled in the art from the drawings provided:

FIG. 1 is a schematic diagram of a fixture mechanism for testing performance of a micro-motor according to the present utility model;

FIG. 2 is a schematic diagram of a test;

FIG. 3 is a schematic diagram of a product fixture module;

FIG. 4 is a partial cross-sectional view of a product jig module;

FIG. 5 is a schematic structural diagram of a test fixture module;

FIG. 6 is a schematic diagram of the internal structure of the test fixture module;

FIG. 7 is a dual-pin test module.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Exemplary embodiments of the present utility model are illustrated in the accompanying drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It should be understood that the embodiments of the present utility model and the specific features in the embodiments are detailed descriptions of the technical solutions of the present utility model, and not limited to the technical solutions of the present utility model, and the embodiments of the present utility model and the technical features in the embodiments may be combined with each other without conflict.

The performance test fixture mechanism for the miniature motor can perform performance tests, such as internal resistance, turn-to-turn and withstand voltage tests, on the miniature motor such as the miniature brushless direct current motor, and preferably can also perform insulation detection. Referring to fig. 1-2, a micro-motor performance test fixture mechanism of an embodiment includes:

the product jig module 2 is used for placing a product to be tested;

the double-needle test module 4 comprises three groups of test probes connected with a tester through a test wire 48, wherein each group of test probes comprises a first probe 41 and a second probe 42;

the test fixture module 3 comprises three test channels, and is used for clamping three wire cores of the lead 11 of the product to the three test channels respectively and plugging three groups of test probes to the three test channels, wherein the first probes 41 and the second probes 42 of the same group are simultaneously in electrical contact with the same test channel.

Referring to fig. 2, during testing, the product fixture module 2 and the test fixture module 3 are generally disposed on the same horizontal plane, the test fixture module 3 is placed under the dual-needle test module 4, and then the dual-needle test module 4 is pressed down onto the test fixture module 3.

In order to accelerate the test efficiency, the embodiment provides a turntable 5, the turntable 5 is located below the dual-needle test module 4, and a circle of jig placement grooves 501 for placing the product jig module 2 and a circle of tool placement grooves 502 for placing the test tool module 3 are distributed on the turntable 5 along the circumferential edge of the turntable at intervals. In this embodiment, the fixture placement slots 501 are further outside than the fixture placement slots 502, i.e. the fixture placement slots 502 are distributed in the inner ring, the fixture placement slots 501 are distributed in the outer ring, and each fixture placement slot 501 is correspondingly configured with a fixture placement slot 502. The fixture mounting groove 501 is a circular groove, and the fixture mounting groove 502 is a rectangular groove. Before testing, a product is placed on the product jig module 2, then a plurality of product jig modules 2 are placed in the circle of jig placement groove 501, a plurality of test tool modules 3 are placed in the circle of tool placement groove 502, the test tool modules 3 need to be rotated to the position right below the double-needle test module 4 during testing, and after testing of one product, the product to be tested next is replaced by rotating the rotary table 5.

Referring to fig. 3-4, the product fixture module 2 includes a conductive base 23, a positioning pin 21, a wire buckle 22, a lower protective cover 25, and an upper protective cover 24 disposed on the lower protective cover 25.

The main body of the conductive base 23 is generally in a disc shape, the disc-shaped bottom of the main body extends to form a positioning column 231, the positioning needle 21 and the wire buckle 22 are installed on the disc-shaped top of the conductive base 23, and the product is inserted on the positioning needle 21, and the product is shown as 1 in the figure. The thread button 22 is located beside the positioning needle 21 and is used for fixing the lead 11. The conductive base 23 is disposed on the upper protective cover 24 and fixed with the lower protective cover 25 by a pin 26, the positioning column 231 of the conductive base 23 passes through the central hole of the lower protective cover 25, and a spring buffer is disposed between the conductive base 23 and the lower protective cover 25. The lower protection cover 25 is clamped into the fixture mounting groove 501 to realize positioning, because the fixture mounting groove 501 is a circular groove, the lower protection cover 25 is in a disc shape, and the circular shape can not grasp the orientation, so that in order to facilitate grasping the orientation, all the product orientations are consistent, the lead 11 is more conveniently connected into the test fixture module 3, the upper protection cover 24 is a circular ring shape with a circular arc cut off part, and the cut off part can be used as a direction indication, such as the orientation of the cut off part to the fixture mounting groove 502.

Referring to fig. 5-6, the test fixture module 3 includes a base 31, three clips 32, three conductive blocks 35, and three springs 34.

The base 31 is substantially rectangular, three conductive plates 37 are disposed at intervals on the base as three test channels, three clips 32 are mounted on the base 31 through a rotating shaft 33 perpendicular to the clips 32, specifically, the conductive plates 37 and the clips 32 extend along a first horizontal direction, the three conductive plates 37 and the three clips 32 are disposed side by side along a second horizontal direction, the rotating shaft 33 extends along the second horizontal direction, the second horizontal direction is perpendicular to the first horizontal direction, the three clips 32 are located right above the three conductive plates 37, and one clip 32 corresponds to one conductive plate 37.

The clips 32 are in a rectangular column shape, a conductive block 35 for being in surface contact with the conductive plate 37 is arranged at the bottom of the head end of each clip 32, a first pinhole 321 for inserting a first probe 41 and a second pinhole 322 for inserting a second probe 42 are arranged at the top of the head end of each clip 32, and the first pinhole 321 and the second pinhole 322 on each clip 32 are distributed along the direction of the head end of the clip 32 pointing to the tail end. The first pinhole 321 is a through hole, and the second pinhole 322 is a blind hole. The first probe 41 is longer than the second probe 42, the first probe 41 is inserted through the first pinhole 321 and then abuts against the conductive plate 37, and the second probe 42 is inserted into the second pinhole 322 and electrically connected to the conductive block 35. Specifically, a conductive bolt 36 is installed in each second pinhole 322, the bolt 36 fixes the clip 32 and the conductive block 35, a pentagonal jack is formed in a nut of the bolt 36, and the second probe 42 is inserted into the second pinhole 322 and then is just clamped into the jack of the bolt 36.

One spring 34 is disposed between the bottom of each tail end of the clip 32 and the base 31, and the tail end of the clip 32 is lifted by the elastic force of the spring 34, so that the clip 32 rotates around the rotating shaft 33, and the head end is pressed down against the conductive plate 37.

In this embodiment, the three clips 32 are independent, so that the three cores of the lead 11 need to be installed by opening the clips 32 one by one, and in fact, the three clips 32 can be connected together, that is, the three cores of the lead 11 can be installed by opening the three clips 32 at one time.

Referring to fig. 7, the dual-needle test module 4 includes: a fixing frame 45, a first fixing block 43, a second fixing block 44, and a locking plate 46 which are vertically arranged and sequentially stacked and fixed together by bolts; a third fixing plate 49 and a locking plate 410 vertically disposed and sequentially stacked and fixed together by bolts and the fixing frame 45; and a first probe 41, a second probe 42, and a third probe 47.

The fixing frame 45 can be connected with the lifting mechanism and used for realizing automatic test by vertically moving up and down under the drive of the lifting mechanism, and can be manually tested by hand. The back of the first fixing block 43 faces the fixing frame 45, the front of the first fixing block is provided with three strip-shaped grooves extending along the vertical direction for installing the first probe 41, the back of the second fixing block 44 faces the first fixing block 43, the front of the second fixing block is provided with three strip-shaped grooves extending along the vertical direction for installing the second probe 42, and the locking plate 46 is installed on the front of the second fixing block 44. The back surface of the third fixing plate 49 faces the fixing frame 45, the front surface is provided with a strip-shaped groove extending along the vertical direction for installing the third probe 47, and the locking plate 410 is installed on the front surface of the third fixing plate 49. The third fixing plate 49 and the first fixing block 43 are arranged along the length direction of the fixing frame 45. The third probe 47 is configured to move downward into contact with the conductive base 23 when the holder 45 is pushed down into the test fixture module 3 with the first probe 41 and the second probe 42.

The first probe 41, the second probe 42 and the testing line 48 of the testing machine are fixed by the screw 411, and similarly, the third probe 47 and the testing line of the testing machine are also fixed by the screw. The first probe 41, the second probe 42 and the third probe 47 are copper needles, and other conductive structures of the present embodiment are copper materials, such as the conductive plate 37, the conductive block 35, the conductive base 23 and the conductive bolt 36.

The detection process of this embodiment is:

the method comprises the steps that a product jig module 2 is installed and placed in a jig placement groove 501, a test tool module 3 is installed and placed in a tool placement groove 502, then the tail end of a clamp 32 of the test tool module 3 is pressed, so that the clamp 32 is opened, a wire core of a lead 11 is placed between a conductive plate 37 and a conductive block 35, then the tail end of the clamp 32 is loosened, the head end of the clamp 32 is pressed down towards the conductive plate 37 under the action of a spring 34, and the conductive plate 37 and the conductive block 35 clamp the wire core of the lead 11;

after the lead 11 is installed, the turntable 5 is rotated to rotate the test tool module 3 to the position right below the double-needle test module 4 for testing, then the double-needle test module 4 is pressed down, after the double-needle test module 4 is pressed down in place, the first probe 41 is inserted through the first pinhole 321 to be abutted with the conductive plate 37, the second probe 42 is inserted into the second pinhole 322 to be just clamped into the jack of the bolt 36, and the third probe 47 is abutted with the top of the conductive base 23. When internal resistance, turn-to-turn or withstand voltage is tested, only the first probe 41 and the second probe 42 are needed to participate; in the insulation detection, a high voltage signal can be applied by the first probe 41 and the second probe 42, then the feedback signal is detected by the third probe 47, and if the product leaks electricity, the third probe 47 also detects the high voltage, so that the insulation detection of the product can be realized. When one product is tested, the rotary table 5 is rotated to switch the next product for testing.

The miniature motor performance test fixture mechanism has the following beneficial effects: the utility model uses the testing tool module to clamp the three wire cores of the lead wire of the product to the three testing channels respectively, the clamping mode can ensure the contact reliability, but the utility model inserts three groups of testing probes to the three testing channels, wherein two probes of the same group are simultaneously in electrical contact with the same testing channel, the internal resistance of the testing channel is small, the phase-phase insulation is high, the contact reliability is high, a stable testing environment is achieved, the accuracy and the reliability of the parameters of the three tests (internal resistance, turn-to-turn and withstand voltage) of the motor are improved, and the quality risks of false detection, false judgment and defective product outflow are reduced.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "above," "below," and similar expressions are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

The terms including ordinal numbers such as "first", "second", and the like used in the present specification may be used to describe various constituent elements, but these constituent elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first component may be termed a second component, and, similarly, a second component may be termed a first component, without departing from the scope of the present utility model.

The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are to be protected by the present utility model.

Claims (10)

1. Miniature motor capability test fixture mechanism, its characterized in that includes:

the product jig module (2) is used for placing a product to be tested;

the double-needle test module (4) comprises three groups of test probes connected with the tester through test wires (48), wherein each group of test probes comprises a first probe (41) and a second probe (42);

the test tool module (3) comprises three test channels, and is used for clamping three wire cores of a lead (11) of the product to the three test channels respectively and plugging three groups of test probes to the three test channels, wherein the first probes (41) and the second probes (42) of the same group are simultaneously in electrical contact with the same test channel.

2. The micro motor performance test clamp fixture mechanism according to claim 1, wherein the test fixture module (3) comprises a base (31), clamps (32) and a conductive block (35), three conductive plates (37) are arranged on the base (31) at intervals to serve as three test channels, the three clamps (32) are installed on the base (31) through rotating shafts (33) perpendicular to the clamps (32) and located right above the three conductive plates, a conductive block (35) used for being in surface contact with the conductive plates (37) is installed at the bottom of the head end of the clamps (32), a first needle hole (321) used for inserting a first probe (41) and a second needle hole (322) used for inserting a second probe (42) are formed in the top of the head end of the clamps (32), the first probe (41) is abutted to the conductive plates (37) after being inserted through the first needle hole (321), and the second probe (42) is inserted into the second needle hole (322) and is electrically connected with the conductive block (35).

3. The micro-machine performance test fixture mechanism according to claim 2, wherein the first pinhole (321) is a through hole and the second pinhole (322) is a blind hole;

each second pinhole (322) is internally provided with a conductive bolt (36), the clamp (32) and the conductive block (35) are fixed by the bolts (36), the nuts of the bolts (36) are provided with jacks, and the second probes (42) are inserted into the second pinholes (322) and then are just clamped into the jacks of the bolts (36).

4. The miniature motor performance test fixture mechanism according to claim 2, wherein the test fixture module (3) further comprises a spring (34), the spring (34) is disposed between the bottom of the tail end of the clip (32) and the base (31), and the spring (34) is used for lifting the tail end of the clip (32) so that the head end of the clip (32) is pressed down towards the conductive plate (37).

5. The micro-motor performance test clamp mechanism according to claim 2, wherein the conductive plates (37) and the clips (32) extend along a first horizontal direction, three conductive plates (37) and three clips (32) are arranged side by side along a second horizontal direction, the rotating shaft (33) extends along the second horizontal direction, the second horizontal direction is perpendicular to the first horizontal direction, and the first pinholes (321) and the second pinholes (322) on each clip (32) are arranged along a direction that the head end of the clip (32) points to the tail end.

6. The miniature motor performance test clamp fixture mechanism according to claim 1, wherein the double-needle test module (4) comprises a fixing frame (45), a first fixing block (43), a second fixing block (44) and a locking plate (46) which are vertically arranged and sequentially stacked and fixed together through bolts;

the back of first fixed block (43) is faced mount (45), openly offered three bar grooves that are used for installing first probe (41) that extend along vertical direction side by side, the back of second fixed block (44) is faced first fixed block (43), openly offered three bar grooves that are used for installing second probe (42) that extend along vertical direction side by side, locking plate (46) are installed in the front of second fixed block (44).

7. The micro-motor performance test clamp fixture mechanism according to claim 6, wherein the product fixture module (2) comprises a conductive base (23), a positioning needle (21) and a wire buckle (22), the positioning needle (21) and the wire buckle (22) are installed at the top of the conductive base (23), the product is inserted on the positioning needle (21), and the wire buckle (22) is located beside the positioning needle (21) and used for fixing the lead (11).

8. The micro-machine performance test fixture mechanism according to claim 7, wherein the double-needle test module (4) further comprises a third probe (47) mounted on the fixing frame (45) for insulation detection, the third probe (47) being adapted to move down into contact with the conductive base (23) when the fixing frame (45) is pressed down into the test fixture module (3) with the first probe (41) and the second probe (42).

9. The jig mechanism for testing performance of a micro-motor according to claim 7, wherein the product jig module (2) further comprises a lower protective cover (25) and an upper protective cover (24) arranged on the lower protective cover (25), the lower protective cover (25) is in a disc shape, the upper protective cover (24) is in a ring shape with a circular arc cut off, the conductive base (23) is arranged on the upper protective cover (24) and is fixed with the lower protective cover (25) through a pin (26), and a spring is arranged between the conductive base (23) and the lower protective cover (25).

10. The miniature motor performance test fixture mechanism according to claim 1, further comprising a turntable (5) located below the double-needle test module (4), wherein a circle of fixture placement grooves (501) for placing the product fixture modules (2) and a circle of fixture placement grooves (502) for placing the test fixture modules (3) are distributed on the turntable (5) along the circumferential edge of the turntable at intervals.